Priming device



June 5, 1923,w

PRIMING DEVICE .Filed oct' 8. 1921 Patented June 5, 1923.`

UNITED. sr

WALTER s KILL'AM, or nn'rnorr, nircnoaaivT PRIMINGDEVICE. f

Application inea october a, i921. Aserial no. oa2eo. v y

To all 'whom t may conce/ru.

vBe it known that I, TA1/ran S. KILLAM, a citizen of the United States ofvA'merica, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useulImprovements in Priming Devices, ofv which theV following is a specification, reference being had therein to the accompanyingl drawingsI v This invention has special references to that class of priming devices which are mounted on thecylinder block of an internal combustion engine and are adapted to communicate With the cylinders or combustion chambers vof the engine to permit of gasoline, kerosene or other fuel entering the cylinders or combustion chambers for primlng or starting purposes, Such dev1ces,espe- .cially those attached to engines of the V type or cylinders which are angularly disposed, include'angular supports and valvular'cups,

the supports maintaining the cups in vertical-planes so that a. priming agent can be readily placed in the same. The supports have passages and the cupsvscrevvthreaded ported stems terminating in needle valves Vmovable to and from the outer ends of the support passages, whereby the cups may be adjusted by rotation to closel or open the passages of the supports. The supports are subjected to vibrations which tend to loosen the cups and unseat the valvular ends thereof, and in consequence of this accidental or unknown adjustment ot' `the priming cups the combustion chambers or cylinders are open to the atmosphere and compression Within the cylinders is materially interfered with and the eiciency of the engine decreased.

' My invention aims to provide positive and reliable means,.in a manner as hereinafter set forth, for clamping, securing or locking a priming cup against accidental adjustment after it has been set in a dened position, and the means which I employ does not alter the priming cup or materially change the design of the cup support. f Instead, my

invention lends a distinct advantage to the valvular priming cup, and the construction by which I obtainvthe above and other results Will be hereinafter described and then claimed.

Reference will now be had to thedrawing, wherein Figure 1 illustrates, in elevationy angular priming devices mounted in the cylinder blocks of an section shown in Fig. 2.

l' Fig. L ,is a centralv axial`section of the priming cup in a plane transverse to ther p internal'combustion engine of i y.

lvertical k'sectional Viewl oit'v Y f Fig'. ,3 is va horizontal sectioiiailvie'vv takeny `on the'line-v-'-B- of Fig,` 2,-and

yThe priming-,device comprises an angular .i

threaded portion'fpwhich permits of the lower angular ,end ofthe supportbeing mounted in the Wall of a combustionchamsupport 1 'having ya nut lportion 2 and la [ber .or cylinder of an engine 4r?. Theangularity of the support 1 is such that the-v'upper vend oi' the support Will be retained in a vertical plane irrespective of the angularity ot the combustionchamber or' cylinder ot the `engine't"-, and the upper end of thefsup- ,g Y

port has a chamber communicating with f 'a ,longitudinalfpassagei5, in the support 1.

The juncture ofthe passage 5 With the chamber 4 affords avalve seat 6 and the Walls of the chamber 4 are screwthreaded to receive ,cup l12 adapted to hold' a smallv quantity of priming agent, and said cup serves as a hand `the threaded portion 7 of a'cup stem 8. vThe 85 piece for' adjusting the needle valve 9 relaytive to the` valve seat 6. With the-needle: valve 9 closed the passage 5 is closed and the combustion chamber or cylinder kof the engine sealedrelative to the priming device.

lith the yneedle valve 9 open any priming agent placed in the cup 12 mayfllovvy through the bore 11 and the ports y10 into the chamber Il and from said chamber through the `pasder of the engine.

So farI have described what I have believedv to be a conventional and` practical 105-y k10o sage 5 to the combustion chamber orfcylinabout the threaded portion 7 of the stem -upper end of the support is also eXteriorly screwthreaded vand provided with a nutory rotatable looking member lll, there being a slight taper to the upper end of the support l and a corresponding taper inthe nut so that by screwing the nut 14 on the upper end of the' support the contractible portions o't the support may be sprung against the threaded portions 7 to bind the threads to such an extent that the stem cannot accidentally rotate. When it is desired to unyseat the valve of the stem it will be necessary to loosen or unscrew the nut 14C to such an extent that the cup 12 may be rotated to raise the valve 9 from the seat 6.

It is thought that the utility of my improvement will be apparent without further description, and while in the drawing there is illustrated a preferred embodiment of my invention? it is to be understood that the construction is susceptible to such changes as fall within the scope of the appended claims.

What I claim is 1. In a priming device wherein a cup is supported in a vertical position and has a r'needle valve movable by rotation to and from an angular end of'a' longitudinal pas` sage in a support for the cup and wherein the needle valve controls the admission of a priming agent to the passage and is adapted to close the passage by seating on said support at the end ofthe passage therein means for holding said cup seated on said support against accidental unseating, said means comprising aF rotatable nut engaging said support and by such engagement preventing accidental rotation of said cup.

2. A priming device as set forth in claim l, wherein the supportl has exteriorly screwthreaded slitted portions which are contracted about a threaded by said nut.

3, The'combinationi'of an angle support.

having a longitudinal passage and valve seat. with the axis of the valve seat at an angle to the aXis of the passage, said support being slit-ted and interiorly and exteriorly screwthreaded above itsvalve seat, a cup having' a ported stem screwed in said support with the stem terminatingl in a valve adapted to engage the valve seat and shut off communication between said cup and the support passa, ;ej and a nut screwed on theslitted portion ot said ysupport and adapted to contract said support aboutthe stem of said cup to hold the valve stem of said cup on the seat of said support.-

ln testimony whereof I affix my signature in presence of two witnesses.

WALTER S. KILLAM.

Titnesses W. S. CHrLivrAiv,y I.v JOHN.

portion of the cup i 

